Sign in to follow this  

SharpDX (DirectX 10) Alpha blending

Recommended Posts

Hi guys,


I am trying to get alpha blending to work using SharpDX (C#). I am using DirectX 10 to be able to use the FX Framework.

I have been looking all over google trying to find my mistake in my BlendState but I don't think that the problem is there because the exact same shader works like intended in my C++ engine.

Currently, everything gets rendered but there is simply no blending going on.

Below is my blendstate, written in the .fx file

BlendState AlphaBlending
	BlendEnable[0] = TRUE;
	SrcBlend = SRC_ALPHA;
        DestBlend = INV_SRC_ALPHA;
	BlendOp = ADD;
	SrcBlendAlpha = ONE;
	DestBlendAlpha = ZERO;
	BlendOpAlpha = ADD;
	RenderTargetWriteMask[0] = 0x0f;

I have tried creating and setting the blend state in code but that doesn't work either.

BlendStateDescription desc = new BlendStateDescription();
desc.IsBlendEnabled[0] = true;
desc.BlendOperation = BlendOperation.Add;
desc.SourceAlphaBlend = BlendOption.One;
desc.DestinationAlphaBlend = BlendOption.Zero;
desc.AlphaBlendOperation = BlendOperation.Add;
desc.RenderTargetWriteMask[0] = ColorWriteMaskFlags.All;
desc.SourceBlend = BlendOption.SourceAlpha;
desc.DestinationBlend = BlendOption.InverseSourceAlpha; 
_context.Device.OutputMerger.SetBlendState(_blendState, new Color4(0, 0, 0, 0), -1); 

I was wondering if it might have something to do with the texture itself (maybe the alpha channel is not loaded properly?) but I am unsure about that

_textureResourceView = ShaderResourceView.FromFile(_context.Device, ParticleSystem.ImagePath);

I wouldn't know where the problem could lie. Is there anyone with experience with SharpDX that might see the problem?


Thanks in advance!

Edited by simco50

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this